In Cockroach wall of each malpighian tubule is lined by …........and …........cells.

Options

A. Secretory and non-ciliated
B. Glandular and ciliated
C. Squamous and muscle
D. Striated and ciliated

Answer

**Step-by-Step Solution:**

1. **Identify the Structure**: The question asks about the lining of the Malpighian tubules in cockroaches. These tubules are excretory structures.

2. **Location of Malpighian Tubules**: Malpighian tubules are located at the junction of the midgut and hindgut in cockroaches.

3. **Number of Tubules**: There are approximately 100 to 150 Malpighian tubules present in a cockroach.

4. **Function of Malpighian Tubules**: These tubules are responsible for the removal of excretory waste from the hemolymph (the fluid equivalent to blood in insects).

5. **Cells Lining the Tubules**: The wall of each Malpighian tubule is lined with two types of cells:
- **Columnar Cells**: These cells are glandular in function, meaning they are involved in secretion.
- **Ciliated Cells**: These cells have cilia on their surface, which can help in the movement of substances.

6. **Conclusion**: Therefore, the wall of each Malpighian tubule in a cockroach is lined by glandular and ciliated cells.

**Final Answer**: In cockroach, the wall of each Malpighian tubule is lined by glandular and ciliated cells.

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